Mrs. Inwood teaches a 7^th grade mathematics class who is interested in how many hours of homework a typical student from their middle school does in a week. The middle school contains grades 6-8 and has 275 students in total. Her students brainstormed plans on how to select a sample of students to survey. Listed below are several of the plans.

Provide a thorough analysis of the appropriateness (advantages and/or disadvantages) of each suggested sampling plan.

1.     Survey every fourth student (Student #4, Student #8, etc.) on each homeroom class list.

2.     Since there are 275 students in the middle school, put 250 white chips and 25 blue chips in a box. As students enter the cafeteria for lunch, have each one take a chip from the box. Survey the 25 students who get a blue chip.

3.     Have each student in Mrs. Inwood’s class conduct the survey in his or her history class.

4.     Distribute surveys to students as they enter the middle school building in the morning and ask students to return their completed surveys to the office at the end of the day.

Question 2 In each of the following situations, identify the scale(s) of measurement that is appropriate for each situation.

(i) A visiting school inspector asked a class teacher to rank the thirty students in her class on “level of discipline”, with 1 standing for the least disciplined student and 30 standing for the most disciplined student

. (ii) Identical twins living in different environments are being compared to find out the influence of the environment on their academic performance. A standard test on academic performance is giving to fifty (50) sets of identical twins and their performance graded over 100.

(iii) “Regular” students and students admitted under the distance learning programme into Accra Institute of Technology are administrated a questionnaire measuring “level of maturity” of the students, with scores on “level of maturity” ranging from 0 to 1

(iv) One thousand students in a statistics class are asked to rate their lecturer on teaching effectiveness at the end of the semester, where rating scores on teaching effectiveness can possibly range between 10 and 50.

(v) A relationship is to be established between “Campus of Study” and “Academic Performance” among Accra Institute of Technology students at KCC campus and Seaview campus based on their final grade point average (FGPA), classified as “Good” (FGPA of 3.2 or better), “Average” (FGPA of 2.5 to 3.19) or “Poor” (FGPA below 2.5). Five hundred (500) and 100 students are sampled from KCC campus and Seaview campus respectively. Out of the 500 students sampled from KCC campus, 200 were classified as “Good” as “Average” and the rest as “Poor”. Out of the 100 students sampled from Seaview campus, 30 were classified as “Good”, 40 as “Average”, and the rest as “Poor”.

what is acclimatization? if you moved from Madison at sea level to Santa Fe at 7000 feet above sea level, how would your kidneys react to the altitude change?

Premature babies may have IRDS how does this condition affect the infant respiratory system?

A teacher has five students who have taken four tests. The teacher uses the following

grading scale to assign a letter grade to a student, based on the average of his or her four

test scores.

--------------------------------------------------------------------

Test Score Letter Grade

--------------------------------------------------------------------

90 – 100 A

>= 80 < 90 B

>= 70 < 80 C

>= 60 < 70 D

< 60 F

-------------------------------------------------------------------

Write a program that uses Python List of strings to hold the five student names, a Python

List of five characters to hold the five students’ letter grades, and a Python List of four

floats to hold each student’s set of test scores.

The program should allow the user to enter each student’s name and his or her four test

scores. It should then calculate and display each student’s average test score and a letter

grade based on the average. Input Validation: Do not accept test scores less than 0 or

greater than 100.

please use comments to describe your work.

Please use c++

Consider the code on the next page. It creates a vector of five strings of vegetable names and you want to make the vector contain only vegetable names that you like. In the spaces designated, perform the following:

1. Declare an iterator for a vector of strings, move it to the position of 'Tomato', and erase it because it's not a vegetable.
2. With the same iterator, use .begin() to point it to the beginning of the list, and erase the first item, ‘Broccoli’ (Because no one likes broccoli.)
3. Write two lines of code that will add two vegetable names that you DO like that isn't already on this list.

#include

#include

using namespace std;

void printVector(vector);

int main()

{

       vector vegs;

       vegs.push_back("Broccoli");

       vegs.push_back("Celery");

       vegs.push_back("Kale");

       vegs.push_back("Tomato");

       vegs.push_back("Carrot");

       printVector(vegs);

       cout << "Declare an iterator for a vector of strings, move it to the position of 'Tomato', and erase it because it's not a vegetable: " << endl;

       printVector(vegs);

       cout << "With the same iterator, point it to the beginning of the list, and erase the first item, ‘Broccoli’ (Because no one likes broccoli.): " << endl;

       printVector(vegs);

       cout << "Write two lines of code that will add two vegetable names that you DO like that isn't already on this list." << endl;

       printVector(vegs);

       return 0;

}

void printVector(vector v)

{

       for (int i = 0; i < v.size(); i++)

       {

              cout << v[i] << " ";

       }

       cout << endl << endl;

}

A group of college students want to have a party. They need to decide if they want to have it at the Beach (B) or at the Park (P) or in a Warehouse (W). They were ask to list in order their 1^st, 2^nd, and 3^rd choice of where they want to have the party. Use the following table and answer the following questions. SHOW YOUR WORK to receive full credit.

a. How many votes were cast?

b. Use the plurality method to determine the winner.

c. Use the instant runoff method to determine the winner.

d. Use the Borda count method to determine the winner.

A school newspaper reporter decides to randomly survey 20 students to see if they will attend Tet (Vietnamese New Year) festivities this year. Based on past years, she knows that 23% of students attend Tet festivities. We are interested in the number of students who will attend the festivities.

• In words, define the Random Variable X.

• Part (b)

  List the values that X may take on.

  X = 0, 1, 2, ..., 23 X = 1, 2, 3, ..., 20  X = 1, 2, 3, ..., 23 X = 0, 1, 2, ..., 20

• Part (c)

  Give the distribution of X.
  X ~  

• Part (d)

  How many of the 20 students do we expect to attend the festivities? (Round your answer to the nearest whole number.)
  student(s)

• Part (e)

  Find the probability that at most 6 students will attend. (Round your answer to four decimal places.)

• Part (f)

  Find the probability that more than 4 students will attend. (Round your answer to four decimal places

Write a program that uses Python List of strings to hold the five student names, a Python List of five characters to hold the five students’ letter grades, and a Python List of four floats to hold each student’s set of test scores. The program should allow the user to enter each student’s name and his or her four test scores. It should then calculate and display each student’s average test score and a letter grade based on the average. Input Validation: Do not accept test scores less than 0 or greater than 100.

For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.

Santa Fe black-on-white is a type of pottery commonly found at archaeological excavations at a certain monument. At one excavation site a sample of 586 potsherds was found, of which 358 were identified as Santa Fe black-on-white.

(a) Let p represent the proportion of Santa Fe black-on-white potsherds at the excavation site. Find a point estimate for p. (Round your answer to four decimal places.)


(b) Find a 95% confidence interval for p. (Round your answers to three decimal places.)

Give a brief statement of the meaning of the confidence interval.

95% of the confidence intervals created using this method would include the true proportion of potsherds. 5% of the confidence intervals created using this method would include the true proportion of potsherds.     95% of all confidence intervals would include the true proportion of potsherds. 5% of all confidence intervals would include the true proportion of potsherds.

(c) Do you think that np > 5 and nq > 5 are satisfied for this problem? Explain why this would be an important consideration.

Yes, the conditions are satisfied. This is important because it allows us to say that p̂ is approximately normal. No, the conditions are not satisfied. This is important because it allows us to say that p̂ is approximately normal.     No, the conditions are not satisfied. This is important because it allows us to say that p̂ is approximately binomial. Yes, the conditions are satisfied. This is important because it allows us to say that p̂ is approximately binomial.